create table path (
  rn bigint,
  from_geo geography,
  to_geo geography
)

create unique index path_rn_idx on path (rn);
create index path_from_idx ON path USING GIST (from_geo);

select *
from path p
where ST_DWithin(ST_GeomFromText('SRID=4326;POINT(72.181037902832 50.8136558532715)'),p.from_geo,1000);

explain analyse
select *
from path p
where ST_DWithin(ST_GeomFromText('SRID=4326;POINT(72.181037902832 50.8136558532715)'),p.from_geo,50000) and rn =20;

Index Scan using path_from_idx on path p  (cost=0.28..8.68 rows=1 width=72) (actual time=10.698..10.698 rows=0 loops=1)
  Index Cond: (from_geo && '0101000020E6100000FEFFFF1F960B5240020000E025684940'::geography)
  Filter: ((rn = 20) AND ('0101000020E6100000FEFFFF1F960B5240020000E025684940'::geography && _st_expand(from_geo, 50000::double precision)) AND _st_dwithin('0101000020E6100000FEFFFF1F960B5240020000E025684940'::geography, from_geo, 50000::double precision, true))
  Rows Removed by Filter: 21193
Planning time: 0.289 ms
Execution time: 10.727 ms

insert into t_gist select generate_series(1,100000), point(round((random()*1000)::numeric, 2), round((random()*1000)::numeric, 2));
create index idx_t_gist_1 on t_gist using gist (pos);
create index idx_t_gist_2 on t_gist (id);

explain (analyze,verbose,timing,costs,buffers)
select * from t_gist where circle '((100,100) 10)'  @> pos and id between 20 and 400;

Bitmap Heap Scan on t_gist  (cost=17.26..21.28 rows=1 width=20) (actual time=0.066..0.066 rows=0 loops=1)
  Recheck Cond: (('<(100,100),10>'::circle @> pos) AND (id >= 20) AND (id <= 400))
  ->  BitmapAnd  (cost=17.26..17.26 rows=1 width=0) (actual time=0.065..0.065 rows=0 loops=1)
        ->  Bitmap Index Scan on idx_t_gist_1  (cost=0.00..5.03 rows=100 width=0) (actual time=0.042..0.042 rows=35 loops=1)
              Index Cond: ('<(100,100),10>'::circle @> pos)
        ->  Bitmap Index Scan on idx_t_gist_2  (cost=0.00..11.98 rows=369 width=0) (actual time=0.020..0.020 rows=381 loops=1)
              Index Cond: ((id >= 20) AND (id <= 400))
Planning time: 0.093 ms
Execution time: 0.088 ms